Grumpy Cat, whose real name is Tardar Sauce, first rose to fame in September 2012 when photos were posted on Reddit showing the cats disgruntled face. The cat suffered from feline dwarfism, which likely caused her distinctive facial features, according to a report from CNN.

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Of course, photos of Grumpy cat have been used in the seven years since in thousands of memes to illustrate dictate or frustration. In fact, the cat became the star of several marketing campaigns.

"Besides being our baby and a cherished member of the family, Grumpy Cat has helped millions of people smile all around the world -- even when times were tough. Her spirit will continue to live on through her fans everywhere," Grumpy's mom, Tabatha Bundesen wrote.